Unfortunately, yes. To be fair I haven't sought any further treatment since my psychiatrist put me on Ativan (no health insurance- U-S-A! U-S-A! lol but I do intend to seek further treatment when I can afford it). But yeah both ENTs, general practitioner, and two shrinks haven't been able to provide any explanation, other than possible correlation between my TMJ and my tinnitus (and I'm not totally ruling that out, but the fact that steroids seem to always makes my tinnitus worse has me leaning against that theory).
In the absence of an answer, I tried to self diagnose (which I don't normally do). One thing I think is possible is that due to years of nicotine use, my blood vessels may have constricted (since nicotine has that effect) and because the blood vessels that run in your inner ear are as thin as strings, my tinnitus finally became noticeably loud over two years ago. In other words, years of nicotine use caught up to me, and I have no one to blame but myself.
Another thing I've considered (highly speculative) is that a few hours before I noticed my tinnitus got louder, I was scratching my back and I felt one of my vertebrae pop. It didn't hurt, and I have no idea how that would cause a worsening of my tinnitus. But, again, just trying to come up with possible causes why my tinnitus seems to always have equal volume in both ears.
Another thing, I've always had this issue where the hearing in one of my ears becomes muffled for a few seconds, and gradually returns to normal hearing. It used to be a very rare thing, but is getting more frequent with age (especially this past year). Don't know if this has anything to do with my tinnitus. Wouldn't surprise me if it did. Though what the cause could be alludes me.
Anyways, I thank everyone who replied to my post and put forth well thought out answers respectfully. This really seems like a good and supportive community. From all the threads I've read, this one seemed the most heated but we tinnitus sufferers are understandably going to be passionate about this subject.